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On display somewhere - lightweight TTR250 special
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These pics are on the aus vinduro face book page no info 

FB_IMG_1484942935617.jpg

FB_IMG_1484942943972.jpg

FB_IMG_1484942951815.jpg

 



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Awesome exhaust!! Is the frame cradle below the engine different?

No starter motor, kicker only..

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Exhaust header under carb???

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It's an interesting beast alright it's a closed group on fb 

Heaps of comments going on it when I find out more I will let everyone know .

 

 

 



-- Edited by ttboof on Friday 20th of January 2017 10:06:27 PM



-- Edited by ttboof on Friday 20th of January 2017 10:07:17 PM

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Interesting

It has the clutch cover from the OE model, but a Kicker on itconfuseconfuse

Could not be doing without the electric start, very interesting why someone would re-route the heard pipe that way.

Saying all that apart from the headlight, I like itsmile

WRF Frame?



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Don't think it's a YZ frame- see phtos of YZ frame below plus what a TTR-powered MXer might look like!

The only thing that came from a TTR on the FB one is the engine and gearbox I think.

frame2.JPG

YZ250 as bought 003.jpg

mod1.jpg



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Going by the comments on the page it may be one of a run of ttrs built for  the Australian six day and  thumper nats around 1998 I've only heard of them but never seen one they were built to fill the gap before the wrfs 

With Geoff Ballard mentioned in the  comments 

One guy who had one said there the one he had had a shield between the exhaust and carby 

The guy who did my rear shock was involved in building them also 



-- Edited by ttboof on Saturday 21st of January 2017 02:02:02 AM



-- Edited by ttboof on Saturday 21st of January 2017 02:03:44 AM

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I just saw this on their facebook page too. Very cool. I always thought about the TTR engine into the steel framed WR.

Here is some more info:

""The bike is pretty much hand built. IIRC is was a collaboration between Cisco's and YZR Engineering (aka Bert Flood Imports).
They were aiming for WRF250 style concept bike, a few years before Yamaha released the WRF250. By all accounts, they succeded - although attitudes have probably changed since the first YZF/WRF250 went way harder than anyone expected.

The story was hand built frame, TTR250 motor, linkless WP shock, YZ bodywork.""

 

""carb and cam and bullet proof..yamaha went the whole season on one crank in the thumper nats racing when they went to yz 4 strokes the cranks were changed out before 15 hours for safety reasons..""


Apparently a CCM tank, and the rear side panels and guard look like YZ parts.


I have that linkless WP shock in the shed, but apart from less maintenance and better ground clearance I dont think it would be worth the effort over the existing TTR shock setup??



-- Edited by Kaos on Saturday 21st of January 2017 09:11:42 AM

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And a pic from the 1998 6 day enduro.

 

These were trick race bikes pre YZF WRF.

ttr250 prototype.jpg



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Great find Les - thanks for sharing!

I thought the Aus TTR specials were mythical beasts but here one is in the flesh and looking brilliant!!!!

Would this have been the special that Geoff Ballard won the class with at the Nats?

I have joined the FB Group (they obviously aren't picky about who they let in wink) and will have a good read later.

Brian



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Thanks Brian I feel the same it's been good seeing the rare beast and getting some info .

 



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Not sure how they can race it in Vinduro - maybe they don't?

These are the "rules" on eligibilty I found:

 

VERi events are meant for Pre 85 model bikes

All motorcycles that were released as 84 Australian delivery models are eligible.


The following models were manufactured post 84 however they are identical to their earlier brothers with the exception of BNG (Bold New Graphics) so are welcome at VERi events. (flow on models)

Yamaha 

1985 IT 200

1985 IT 250

1985 IT 490

1985 TT 600 (excluding Belgarda)

DT 175 - all drum brake models

 

Kawasaki 

 

1985 KDX 200

1985 KDX 250

Honda 

 

XR 200 - all years 

1985 XR 250

1985 XR 350

Suzuki

TS 185 - all models

 


 

The following models were not made prior to 1985 and are physically different to 1984 models but are considered 'old school' so are welcome to VERi events.

1985 - 1987 Yamaha IT 200

 

 


 

 

The following models are not considered to be classic Trail or Enduro models and as such are NOT WELCOME at VERi events so please don't ask.

Use of major parts from post 85 models (forks, discs etc.) are frowned upon as they are not in the 'spirit' of the event. 

 

All post 90 models

Any model that came standard with a rear disc as this represents a technological timeline. (Rokon's exempt)

 

Watercooled KDX 200's & 250's

Yamaha WR range, 200's - 250's & 500's



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Correct ttrs can't race in the class . The specials were built to fill the gap  Yamaha had  at the time in thier off road range .Bert flood did some great kits that also allowed the yz250  to be road registered around the same time again sold as a Yamaha model  . 

Very fortunate for us down here 

If you get a chance to go to a vinduro it's a great day out 

 



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Hey Les and Brian.

Did you see the latest info on the facebook page. They are hidden in the comments, some of magazine articles at the time with more pics and info.. Great stuff.

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Yep - I have saved away copies of those scanned pages!!

If money were no object I would ask them to dig out the jigs and build me one but I would put our 350cc TTR engine in it rather than 250 biggrin

Brian



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I wonder how much lighter they actually are? Lose the battery, startermotor and solenoid, rear light and flashers from a ttr... The rear subframe is obviously thinner, and I'd guess the front box section downtube on our bikes is heavier than the thin twin tube cradle on this bike. Probably lightweight wheel rims. I don't think there's much difference between usd and conventional forks weightwise?
I have a vague recollection of weighing my frame stripped at 12kg. Brian did you ever weigh the yz?
They sure look nice bikes. Lean and hungry, but not like an ironing board like modern enduros.

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The magazine article says 104 kg.



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mossproof wrote:

I wonder how much lighter they actually are? Lose the battery, startermotor and solenoid, rear light and flashers from a ttr... The rear subframe is obviously thinner, and I'd guess the front box section downtube on our bikes is heavier than the thin twin tube cradle on this bike. Probably lightweight wheel rims. I don't think there's much difference between usd and conventional forks weightwise?
I have a vague recollection of weighing my frame stripped at 12kg. Brian did you ever weigh the yz?
They sure look nice bikes. Lean and hungry, but not like an ironing board like modern enduros.


Timely thread this one.

FYI  I just weighed the TTR frame ( The bent one!!!) in the shed 11.7 kg.  

The prototypes had hand-built frames, custom stripped down wiring looms, Talon Hubs with excel rims or later ones YZ wheels, removed elec starts and batteries and linkless rear suspension.

I've gone nuts and only just finished stripping my TTR right down to its undies, and  weighing along the way. Ive retained lights, horn and electric start.  Gotta have a horn for when I pass the KTM s and 450s   smilesmile

I've got the notes here.  

Alloy rear sprocket saved 1 kg.

lithium battery (WRF one fits but had to fiddle) saved 2kg,

removed toolkit was  - half a kg,

kickstarter lever - half a kg. Will go in the toolbox in the trailer.  It sticks out too far and has always annoyed me anyway. I figure if the starter dies (unlikely)  I can always bump start, ride back and refit the kicker if i have to.

GYTR muffler was 2 kg lighter than the stock one.

Stock speedo and headlight was 2.3 kg, aftermarket headlight only about 600grams ??

A box of road parts like rear guard extender, blinkers, pillion pegs and various stuff I dont need to trail ride weighed 3.6 kg.   There probably more bits laying around as well.

So by my dodgy maths I reckon I have stripped out about 11.5 kg fairly easily.  And you CAN feel the difference.

When I did my fork swap I think I only saved another .7 kg with the WP USD forks/front wheel, didn't weigh the triple clamps though.

So around 12 kg lost retaining the e start.

I'd guess she'd be about 120 kg? with half a tank of fuel.

 

 A long way of 104 kg.

 



-- Edited by Kaos on Tuesday 24th of January 2017 12:10:25 AM



-- Edited by Kaos on Tuesday 24th of January 2017 12:15:33 AM

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Awesome, I saw a photo of this recently in a magazine somewhere, meant to post it up and forgot all about it.

I have an old sidetrack magazine at home with 3 different upgraded TTR's in it. I will find it and post it up too.

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Ha Ha Leigh I've been looking for that one I but cant find it. Well done. Thats the one with the white open enduros??

 

I also have a nov dec 99 Dirt Action with a ripper article on doing up the TTR250 i've kept.   I can put that up too.

Maybe a new thread for magazine articles??



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Kaos wrote:

Maybe a new thread for magazine articles??


 Excellent idea - done!  See http://ttr250.activeboard.com/f628074/magazine-articles-and-reference-documents/



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 I just weighed the TTR frame ( The bent one!!!) in the shed 11.7 kg.  

 


 what dose it weigh out side the shed?..."Sorry but I just couldn't resist that one"

 

My TTR is 112kgs with about 2 or 3  liters of gas... 

Sat both wheels on bath room scales and added the weights..

should be pretty dam close...

 

 

..



-- Edited by petenz on Tuesday 24th of January 2017 09:52:01 AM

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leigh wrote:

Awesome, I saw a photo of this recently in a magazine somewhere, meant to post it up and forgot all about it.

I have an old sidetrack magazine at home with 3 different upgraded TTR's in it. I will find it and post it up too.


 If you have better quality scans than I posted then please add them to the thread Leigh - mine were a bit poor.....



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Kaos wrote:

I also have a nov dec 99 Dirt Action with a ripper article on doing up the TTR250 i've kept.   I can put that up too.


Yes please! Post in new sub forum biggrin 



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TTRfan wrote:
Kaos wrote:

Maybe a new thread for magazine articles??


 Excellent idea - done!  See http://ttr250.activeboard.com/f628074/magazine-articles-and-reference-documents/


 Thats the one, good job, beat me too it.



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The prototypes all run an oil cooler. You can see the lines running up high in front of the motor, so its not the factory TTR oil cooler.

Could it be the Honda xr250 or 400 cooler behind the headlight, or similar???? Could be a handy mod??



-- Edited by Kaos on Tuesday 24th of January 2017 11:45:07 AM

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On display somewhere - lightweight TTR250 special
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Great. Mother always said the internet would make me go blind, but I don't think squinting at ttr magazine articles was what she was worried about!!!

This forum must be one of the best bike forums there is. So much information, so many useful contributions, no bloody adverts...

Makes me proud to be part of it. Thank you all for making the effort to share all this stuff.

Ride safe,

Simon.

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I second that Simon, and I made a note so I'll remember to find that old Sidetrack magazine, bought if off Ebay for about $5 a few years ago.

 

Kaos - I think thats right, they all had different levels of modification, one had Ohlins suspension and the electric starter removed to fit a different carb, 



-- Edited by leigh on Tuesday 24th of January 2017 11:20:59 PM

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Leigh,
The side track magazine / article you are looking for , is it the one that contains the picture, the third from the left at the top, shown in Magazines articles as: Random adverts and articles involving TTRs. ????
That's the mag I cant find, a really good article that compares 4 ttr's with varying stages of mods from stock to race spec.
Steve

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Think that's the one

Of course I'm sure these will appear upside down. 



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Try that again

image1.jpeg

p50.jpeg

p51.jpeg

p52.jpeg

p53.jpeg

 

 

 

 

 

 



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This has been a great read and the info is great off to the shed for some ttr time today 



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Well done Leigh thats the one I have been looking for.☺☺

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Many thanks Leigh - a great read!!!

Couple of points:

1. An oil cooler adds 200mls of oil - not if it's a genuine Yamaha one - I reckon it's less than half of that.

2. 292cc option - anyone know how that is achieved - what sleeve and piston were used?

3. Balance cam left on the bench - balance shaft that sits in the front of the crankshaft perhaps?

4. Note the shorty header on the tricked up TTR on page 52 Steve wink

Excellent stuff biggrinbiggrinbiggrinbiggrin

Brian

PS Any chance you can copy your post onto the new Magazine Articles etc subforum by starting a new thread "Sidetrack Magazine Re-Born" - please Leigh?



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I noticed the shorty header AND the oil coller fitted together. Is the cooler mounted higher??

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Kaos wrote:

I noticed the shorty header AND the oil cooler fitted together. Is the cooler mounted higher??


 Well spotted!

Looking at photos of the oil cooler on my 325 it seems to be fitted in the same place. 

Maybe I should try a shorty header again confuse

Brian



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Brian,
Does the header pipe pictured above run slightly lower than yours?
It would be good to have a shorty available that accommodates the factory cooler.
The prototypes run coolers somehow up higher out of sight.



-- Edited by Kaos on Friday 27th of January 2017 01:45:20 AM

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Hi Steve

I haven't got an oil cooler fitted at the moment but as soon as Steve has sold the 250cc engine currently fitted and on test, I will refit my 325 engine with oil cooler and try a shorty header again wink

Buy the engine please someone! 

Brian



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Ooo interesting... I'd love to know if they fit!

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That short header looks to drop down a bit lower
than the one Steve sells... Steve's one sits
a bit flatter... look at my bike 2morrow..





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Here are a couple of pics of the shorty pipe that Steve sells through the Totally TTRs shop. If you compare the position of the VIN plate then Steve's looks to run lower but maybe the issue was that it has a tighter bend and runs too close to the oil lines?

Header.JPG

Header 2.JPG



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Now I need to get an oil cooler here to see if I can get it to fit.



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ttr steve wrote:

Now I need to get an oil cooler here to see if I can get it to fit.


 Hen's teeth jobby Steve no



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Wow that shiny header looks very trick. Yeah the bend looks lots tighter on yours Brian.

What effect on overall engine power do they give. I assume shorter pipe means more hp, means less down low, more up high. is it noticeable to ride.





-- Edited by Kaos on Sunday 29th of January 2017 01:04:09 AM

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ttr steve wrote:

Now I need to get an oil cooler here to see if I can get it to fit.


 What about an aftermarket cooler kit put together and sold from totallyttrs that suits both header types?



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Wonder if Steve's got the internal plug/bolt to redirect the oil though a cooler..

A cooler 75mm x 150mm will fit with the short header...

I do a lot of quite slow forestry riding .. a cooler would help...



..





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petenz wrote:

Wonder if Steve's got the internal plug/bolt to redirect the oil though a cooler..

A cooler 75mm x 150mm will fit with the short header...

I do a lot of quite slow forestry riding .. a cooler would help...



..



 Sure does

 

https://totallyttrs.com/epages/699105d9-e4cc-4b32-b236-84e72cd67f84.mobile/en_GB/?ObjectPath=/Shops/699105d9-e4cc-4b32-b236-84e72cd67f84/Products/TTR-0543



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yer I did see that one.... thought they had a machined end with no thread...

I must have been dreaming....again..






.

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So the factory oil cooler will fit with the shorty header but the oil lines are fouled. Is this correct?

The prototypes look to run custom braided oil lines that aren't as thick as the factory hoses.

Slightly longer and thinner lines might do the trick?

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